diff --git a/ui/src/ui/chat/export.ts b/ui/src/ui/chat/export.ts
index 31e15e592e2..365d640ffcc 100644
--- a/ui/src/ui/chat/export.ts
+++ b/ui/src/ui/chat/export.ts
@@ -10,7 +10,15 @@ export function exportChatMarkdown(messages: unknown[], assistantName: string):
   for (const msg of history) {
     const m = msg as Record<string, unknown>;
     const role = m.role === "user" ? "You" : m.role === "assistant" ? assistantName : "Tool";
-    const content = typeof m.content === "string" ? m.content : "";
+    const content =
+      typeof m.content === "string"
+        ? m.content
+        : Array.isArray(m.content)
+          ? (m.content as Array<{ type?: string; text?: string }>)
+              .filter((b) => b?.type === "text" && typeof b.text === "string")
+              .map((b) => b.text)
+              .join("")
+          : "";
     const ts = typeof m.timestamp === "number" ? new Date(m.timestamp).toISOString() : "";
     lines.push(`## ${role}${ts ? ` (${ts})` : ""}`, "", content, "");
   }